Those will work, they run well at 5 volts all the way up to 14 volts. My flat bottom will be running 7.2 or 8.4v.

Hoghappy in researching the flat bottoms I found some that have a shallow step keel in them.

nick_75au so you know where I am coming from I work for Polk/Aristo-craft, I handle the LMP division.(commercial) we are the US reps. for Mabuchi, Nichibo, San-ye, and several other fractional HP motor manufactures.
On average the 5 pole motors have about 5-20% more torque the a 3 pole motor. Motors used in the trains, including ours, Aristo-Craft (G) & RMT (O) are wound for a lower speed and higher torque. These motors are also 0 timed and will run equally will in both directions.

No problem we ship world wide.
Just go to the web site and order the PLK00100.

The more I look at my design, I start to think maybe I should build a full size.
9 ft long. It would fit in my trailer that is 12 ft long. I think that it would make a great recovery boat for the club. Electric trolling motor for power.
I would make the cabin removable.

I'm trying to choose a prop now to match to the speed 600, its a 7.2V motor direct drive, and I have room for up to 45mm of prop. Can someone suggest to me a Raboesch brass prop size/blade count that would give moderate speed on 6V from two 4.5Ah sealed lead acid batteries, without burning out my motor? It is water cooled with an aluminum tube coil from graupner.

This isn't a speedboat by the way and the model is 54cm long, isn't that 600BB Turbo for speedboats turning high pitch props? Either way it looks like my 600 standard has too high KV for turning a big prop it would probably drain the battery and overheat pretty quick. Should I go ahead and order this motor?

though it wont be pushing the 4 Kg of a Springer either so might actually be OK
600 BB turbo is really good for speedboats but needs to have more than its rated voltage for good speed, at lower than rated voltage becomes a nice slow motor with enough torque to drive a largish prop.

I ran mine on Sunday. 7.2v 1500ma nicad. At full speed with a 30mm 3 blade Raboesch brass prop. Speed is a bit faster then I can walk, duration was 1 1/2 hours +. That's running full for about 70% of the time. Handles very well and will turn on a dime.
Now I just have to finnish painting and detailing her.

Gill RC I'm waiting with baited breath to see some video of how the tug handled on the water. I have been eying these for a few years but have always had to put them on the back burner, maybe this will get me off my duff and build one for the grandson. Jerryj98501

seems like it took ages but finally I managed to get all the parts cut out and started assembling last night, its looking good but I will really reduce the parts count in my next iteration. It was a chore cutting them all out.